package com.wzy.netty.core.websocket;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

/**
 * 描述  :  TextWebSocketFrame ,表示一个文本帧
 * 处理 客户端发送的消息,回显
 * 创建人:    Wzy
 * 创建时间: 2020-06-11  20:01
 */
public class MyTestWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {
    @Override
    protected void channelRead0(ChannelHandlerContext channelHandlerContext, TextWebSocketFrame msg) throws Exception {
        System.out.println("服务器端收到消息:" + msg.text());
        /*回复消息*/
        channelHandlerContext.channel().writeAndFlush(new TextWebSocketFrame("服务器时间:" + LocalDateTime.now() + "  " + msg.text()));
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        /*注意 :  id 代表唯一值*/
        System.out.println("handlerAdded被调用" + ctx.channel().id().asLongText());
        System.out.println("handlerAdded被调用" + ctx.channel().id().asShortText());

    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("发生异常" + cause.getMessage());
        ctx.close();
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved 被调用" + ctx.channel());
    }
}
